Cross
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Cross  
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Pattern type  Oscillator  

Number of cells  28  
Bounding box  10×10  
Period  3  
Mod  3  
Heat  26.7  
Volatility  0.83  
Strict volatility  0.83  
Discovered by  Robert Wainwright  
Year of discovery  1989  
 
 
 

Cross is a period3 oscillator that was found in October 1989 by Robert Wainwright.^{[1]} It is the smallest in an infinite family of period 3 oscillators, the next of which is cross 2. The fact that this infinite family of oscillators exists shows that there are an infinite number of oscillators that are polyominoes in at least one of their phases. In August 2004 Jason Summers found a 16glider synthesis of this oscillator.^{[2]}
See also
References
External links
 Cross at the Life Lexicon
Categories:
 Patterns
 Oscillators with 28 cells
 Patterns with 28 cells
 Patterns found by Robert Wainwright
 Patterns found in 1989
 Patterns that can be constructed with 15 gliders
 Oscillators
 Periodic objects with minimum population 28
 Oscillators with period 3
 Oscillators with mod 3
 Oscillators with heat 26
 Oscillators with volatility 0.83
 Oscillators with strict volatility 0.83
 Patterns with complete square symmetry
 Seminatural periodic objects
 Sparkers
 Sparkers with period 3
 Weak sparkers